One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(9,10,13,14)(11,15,16,12)(18,22)(19,23)(26,29)(27,31)(9,11)(10,12)(13,16)(14,15)(17,18)(19,24)(20,23)(21,22)(27,31)(30,32) involution — undirected(10,14)(12,15)(18,22)(20,24)(25,26)(27,30)(28,29)(31,32) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,11)(10,15)(12,14)(13,16)(17,19)(18,20)(21,23)(22,24)(25,27,28,31)(26,30,29,32)(1,3,4,7)(2,5,6,8)(9,12,13,15)(10,16,14,11)(17,20)(18,23)(19,22)(21,24)(25,26)(27,30)(28,29)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.